Combined backwater valve and flushing system



J. ZEHRINGER COMBINEDV BACKWATER VALVE AND FLUSHING SYSTEM Filed Aug. 2:5, 1922 Patented Mar. 20, 1923.

i tease JOHN W. znnninena, or wrnenaor, MASSACHUSETTS.

COMBINED BACKWATER VALVE AN FLUSHING SYSTEM.

Application led August 23, 1922.

l "c ad whom t may concern y.'

Be it ltnown that I, JOHN WV. Ziel-rumena, a citizen of the United States, and resident ot lVinthrop, county of Suiolk, State of Massachusetts, have invented an Improvement in Combined ackwater Valves and .iilushing Systems, ot' which the -following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representingl like parts.

In many conduits, such for instance as drains and the like, it is more or less common to introduce `what is termed a back water valve, this beinga check valve which will permit the water to flow through the conduit in one direction but will close to prevent water from liowing in the other direc- `tion oi the conduit and backing up therein.

My invention relates to` a device of this sort and has ior its object to provide a novel construction by which the check valve can be positively closed and at the same time 'ater introduced on the delivery side thereol iior 'flushing the drain and system.

Another object of the invention is to provide a novel construction in which the operation ot turning on the water for flushing the system will automatically close the check valve so to prevent the water used for Atlushing;` trom backing up in the conduit.

Other objects of the invention are to improve generally devices oi this nature all as will be more fully hereinafter set forth.

in order to give an understanding of the invention l have illustrated in' the drawings a selected embodiment thereof which will now be described at'ter which the novel ifeatures will be pointed out in the appended claims.

Figure A1 is a vertical sectional view of a conduit section having my improvements applied thereto.

lf1 r. i?. is a top plan view thereof with a pa rt l'uolven out.

-1 is a section on the line 3 8, Figi section on the line 4f-4a Fig. 2.

Fit. 5 a view oit a conduit in the forni of a tra p having my improvements applied thereto.

Fig. 6 shows one way of applying my iniprovements to a Hoor drain.

My invention may be applied to conduits of various forms and in Figs. l and 2 I have shown it as it might be installed in an ordinary drain pipe. In these figures I indicates serial No. 583,769.

a' drain pipe section having a hub 2 at one end to receive the spigot of another drain pipe section'and havinga "spigot 3 at the other 'end to enter the hub ot the adjacent section. Situated in this drain pipe section is a sleevel which is callred therein as shoi, Tn at 5 and the end ot which ttorms a valve seat for a back water or check valve 6.

ln the present embodiment of my invention this check' valve is pivotally mounted on a tubular member or pine section 7 which ext-ends transversely across the conduit seetion l. The check valve 6 is provided with an arm 8 having a hub 9 which encircles the pipe 7 and can turn thereon to allow the valve to'open and close. The pipe 7 is shown as havinga stop screw l0 which operates in a slot l1 formed in the hub 9.4 This pipe 7 is journalled at one end in a bearing l2 formed on the conduit section l, said bearing operating to close said end of the pipe and said pipe extends through a stuffing bof; termed in the opposite wall ot' the conduit section. This pipe 7 is termed with discharge ports 14 and it is connected with a supply pipe l5 through a suitable valve, said supply pipe connecting with any suitable source oi" water supply. When the valve is open 'then water can flow through the pipe section 7 and discharge ports 14 into the conduit section l on the discharge side of the valve 6 thereby` furnishing` water for iiushingf the drain beyond the valve,

The construction is such that when the valve is opened to permit a free flow of the water through the pipe 7 to Hush the system, the check valve 6 will `be positively closed so as to prevent the water 'trom backw inc# up .in the conduit,`

The valve I have herein shown for this purpose consists of a valve casing' i6 havingf a port 1T with which the pipelA communicates and a valve member 1S formed on the end of the pipe section 7. said valve member beingin the torni of a plug valve.

The valve portion 1 8 ot the pipe 7 is shown tapered slightlyv to Vtit the valve casing 1G and the end ot the pipe o' 'l 'i fi. i U

b v the plus@ 19. This valve portion 18 is 105 `Formed with a port 520 which can be brought into and out ot register with the port 17 by turning the pipe 7. This pipe is provided with a handle 2l by which it may be turned.

The pipe 17 is shown in Figs. il and 2 110 in positionv in which the port 2O is in register with the port 17 so that water can fiow through the pipe 7 tor flushing purposes. When in this position the stop screiv 10 is at the lower end o' the slot ll and the valve 6 is thus locked in this closed position. This is the position of the parts during the flushing operation. When the pipe i is turned through 900 to bring` the stop screv.v l0 into theI dotted line position Figi; i the port 2O will be carried out of alignment with the port 17 thus shutting eti' the Water Jfrom the pipe 7 and When the parts are in this position the check valve 3 is tree to open and close as an ordinary bach Water valve. This is the normal. position of the parts and When the partsare thus positioned the device will operate as an ordinary baci: iva-ter valve.

/Vhen it is desired to ilush the system then the parts are turned inte the position shown in Figs. l land 2 thereby positively closing the check valve and opening the valve leading to the pipe i" so that Water can flow therethrough.

The conduit section l is shown being enlarged somewhat as shown to accommodate the mechanism above described and it is also provided With the opening which is closed by the removable cover Tl s, removal of the cover 23 permits access to thef'valve 6. y

ln Fig. 5 l have shown construction wherein my improved checlrvalve is associated with a pipe fitting in the term of trap 23. ln this case the outlet end oit the trap is formed with a valve seat fr on which the back Water valve 6 rests and the latter is provided with the 'Flushing` device all as above described.

In Fig. 6 l have shown my invention as it might be applied to a floor drain trap such as is used in garage oors or any other places Where surface Water is'to be drained. in this construction 2a indica-tes the body oi: the trap havingthc grating` 2.5 atv its top and Z6 indicates the sediment chamber. The outlet pipe is shoivn at 27 and itl is provided with the downturned end 28 leading' nearly to the bottom oit the casingl 2e.

My combined back Water and valve 6 is located in the discharge pipe diishingr `and operates as above described.

The drawings show only a vieiv oil' many different installations which may be made with my improved back Water ',flusiiing` val ire and l ivish it understood that the invention can be installed in a great variety el 'l e drainage systems or Ydrain iittinojs t herein illustrated.

Undersome circumstances it may he de sirable to introduce steam or steam and ivater into the system for flushing; purposes iaiaeee and, of course, this may be done by simply connecting the pipe 7 to a suitable source of steam supply or steam and Water supply as the case may be.

iinoijig the drain iittings to Which the invention may be applied may be mentioned the ordinary sink Waste pipe and other iflunibers fixtures such lavatories. urinais7 etc.

l claim.

l. The combination with a conduit section, of a back vrater check valve therein, ot means 'for admittingy dashing Water to the co duit on the discharge side of the check .falve, said means having4 provision tor mochanicallv clos' the check valve positively,

Q` in device of the class described7 the combination with a conduit section or. a haelt Water che valve therein, a valve device for admitting flushing Water to the conduit on the discharge side of said check valve, and mechanical means associated With the valve device to positively close the checl;

valve when said valve device is open.

combination with a conduit section having y'rfi/e seat therein, a pipe section located in the conduit and extending through one Wall thercoh aback Water valve pivotally mounted on the pipe .section and adapted to close against valve seat9 said pipe section having discharge ports for tlushing Water on the discharge' side of the check valveA` a valve device for admitting water to said 3. in a device oit the class described, the

pipe section, and means to close positively the bacl; ivater valve When said valve device is open.

e. ln a device of the class described, the combination with a conduit section having a. valve therein, ot a pipe section rotatably mounted in the conduit section,l a back Water valve pivotally mounted in the pipe section and adapted to close against said valve seat, said pipe sectionL having" discharge ports to deliver Water on the discharge side of the check valve and also having; a valve portion extending beyond the conduit section and provided With a ports a valve casing in which said valve portion is rotatably nounted and also provided with a pornV said valve casing communicating with a. supply pipe, a turning movement ot the pipe section bringing` said ports into and out of register, and means for holding the checlr valve to its seat When said ports are in register.

in testimony whereof, l have signed my naine to this specification.

JOHN W. ZEHRINGER l G i) 

